Annual Seminar 2020

ECMWF | Virtual | 14-18 September 2020

Annual Seminar 2020 group photo

 

The Annual Seminar was held virtually on 14-18 September.

Numerical methods for atmospheric and oceanic modelling: recent advances and future prospects

This seminar reviewed recent advances in numerical methods for atmospheric and oceanic models that form part of modern weather prediction systems. There are several objectives that drive research and development in numerical methods, such as improving the accuracy and efficiency of discretisations and addressing long-standing biases; improving conservation properties; improving the coupling of the dynamical core with physical parametrizations and other Earth system components; and improving uncertainty estimates in ensemble predictions.

A closely related topic covered in this seminar was how to develop  efficient time-critical, very high-resolution global solvers on massively parallel architectures, addressing demanding communication and algorithmic scalability problems. This need has stimulated research and development not only in new numerical methods but also in the adaptation of existing numerical algorithms to enable their efficient execution with heterogeneous high-performance computing architectures based on accelerators. Both are essential activities that allow global weather prediction centres to exploit new technologies for implementing demanding next-generation high-resolution forecasting systems.

Seminar aims

The seminar is part of ECMWF's educational programme and is aimed at early career scientists but also more established scientists that want to engage more with numerical methods for atmospheric and oceanic modelling.

Presentations and recordings

Monday 14 September 2020

Welcome
Florence Rabier (ECMWF)

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Towards a Digital Twin of the Earth System
Nils Wedi (ECMWF)

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GungHo: Designing a next generation dynamical core for weather & climate prediction
Thomas Melvin (Met Office)

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Dynamics developments within the ALADIN NWP consortium
Piet Termonia (Royal Meteorological Institute)

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Towards a more stable formulation for the Non-hydrostatic ”constant-coefficient semi-implicit” dynamical core of AROME system
Fabrice Voitus (Météo-France)

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The Ocean Model ICON-O as part of the Earth System Model ICON-ESM
Peter Korn (MPI)

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Motivations, successes, and problems, with the Lagrangian-remap dynamical core in MOM6
Alistair Adcroft (NOAA-GFDL)

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Tuesday 15 September 2020

Exploring a representation of model uncertainty in the IFS due to the transport scheme
Sarah-Jane Lock (ECMWF)

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Compatible finite elements for numerical weather prediction
Colin Cotter (Imperial College)

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Towards global weather forecasting with IFS-FVM
Christian Kühnlein (ECMWF)

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The DYNAMICO dynamical core : theory, implementation and outlook
Thomas Dubos (LMD/IPSL, Ecole Polytechnique)

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On the improvement of operational downscaling in spectral wave models
Aron Roland (BGS IT&E)

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Sea ice rheology and numerical solvers for sea ice dynamics
Jean-Francois Lemieux (ECCC)

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Wednesday 16 September 2020

Multiresolution ocean modelling
Sergey Danilov (Alfred-Wegener-Institut)

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Temperature discretizations for the IFS, horizontal to vertical resolution aspect ratio and their importance for accurate global weather predictions
Inna Polichtchouk (ECMWF)

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The ICON model: actual state and first steps towards a new dynamical core based on the Discontinuous Galerkin method
Michael Baldauf (DWD)

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Mixed-Precision Arithmetic in Earth-System Modelling
Sam Hatfield (ECMWF)

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The GFDL Finite-Volume Cubed-Sphere Dynamical Core: Design and Prospects for Global and Unified Modeling
Lucas Harris (NOAA-GFDL)

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Global Nonhydrostatic Atmospheric Modeling using Spherical Centroidal Voronoi Meshes
Bill Skamarock (NCAR)

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Thursday 17 September 2020

Transport schemes for weather and climate models
Hilary Weller (University of Reading)

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Physics-dynamics aspects of the AROME model and its coupling with NEMO and WW3 ocean/wave model
Sylvie Malardel (Météo-France/LAcy)

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Seamless integration of hydrostatic, soundproof and fully compressible equations
Rupert Klein (Freie Universität Berlin)

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Modelling geophysical flows with nonoscillatory forward-in-time methods
Piotr Smolarkiewicz (National Center for Atmospheric Research)

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Some Interesting Results with Element-based Galerkin Nonhydrostatic Atmospheric Models
Francis Giraldo (NPS)

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Friday 18 September 2020

Development of the spectral-based dynamical core of the JMA operational global model
Masashi Ujiie (JMA)

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Development of a scalable high-order conservative nonhydrostatic model by using multi-moment finite volume method
Xingliang Li (CMA)

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Next-Generation Time Integration for Weather and Climate Simulations
Martin Schreiber (Technical University of Munich)

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Discontinuous Galerkin methods for Numerical Weather Prediction
Giovanni Tumolo (ECMWF)

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Posters

Consistent Modelling of Non-Equilibrium Thermodynamic Processes in the Atmosphere
Paul Bowen (Exeter University)

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Quadrature-free Discontinuous Galerkin Formulation for Shallow-water Equations with Code Generation Features
Sara Faghih-Naini (University of Bayreuth)

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Dynamics-physics coupling in the context of the GEM dynamical core with height-based terrain-following vertical coordinate
Syed Zahid Husain (Environment and Climate Change Canada)

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Lateral boundary conditions in GungHo
Christine Johnson (Met Office)

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ESCAPE 2: Energy-efficient SCalable Algorithms for weather and climate Prediction at Exascale
Andreas Mueller (ECMWF)

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Kinetic energy backscatter (KEB) parameterizations for ocean circulation models with intermediate resolution and their testing in NEMO ocean model
Pavel Perezhogin (Marchuk Institute of Numerical Mathematics of the Russian Academy of Sciences, Moscow, Russia)

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Legacy code base on HPC accelerators: source-to-source translation for column based numerical algorithms
Balthasar Reuter (ECMWF)

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Dynamical core of the Russian global NWP model: current state and further developments
Vladimir Shashkin (Institute of Numerical Mathematics, Russian Academy of Sciences)

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Numerical treatment of physics contribution in ALADIN System
Martina Tudor (DHMZ)

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Annual Seminar Lecturers

  • Alistair Adcroft (NOAA-GFDL)
  • Michael Baldauf (DWD)
  • Colin Cotter (Imperial College)
  • Sergey Danilov (Alfred-Wegener-Institut)
  • Thomas Dubos (Ecole Polytechnique)
  • Francis Giraldo (NPS)
  • Lucas Harris (NOAA-GFDL)
  • Sam Hatfield (ECMWF)
  • Rupert Klein (FU Berlin)
  • Peter Korn (MPI)
  • Christian Kühnlein (ECMWF)
  • Jean Francois Lemieux (ECCC)
  • Xingliang Li (National Meteorological Center, CMA)
  • Sarah-Jane Lock (ECMWF)
  • Sylvie Malardel (Météo-France/LAcy)
  • Thomas Melvin (Met Office)
  • Inna Polichtchouck (ECMWF)
  • Aron Roland (BGS IT&E GmbH)
  • Martin Schreiber (TUM)
  • Bill Skamarock (NCAR)
  • Piotr Smolarkiewicz (National Center for Atmospheric Research (NCAR))
  • Piet Termonia (RMI)
  • Giovanni Tumolo (ECMWF)
  • Masashii Ujiie (JMA)
  • Fabrice Voitus (Météo-France)
  • Nils Wedi (ECMWF)
  • Hilary Weller (University of Reading)

Organising committee

  • Michail Diamantakis
  • Samuel Hatfield
  • Christian Kühnlein
  • Sarah-Jane Lock
  • Kristian Mogensen
  • Andreas Müller
  • Inna Polichtchouk

Programme

Contact


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